太古宙 meaning in Chinese
archean
Examples
- On the age of metamorphic rocks of the yudongzi group and the archean crystalline basement of the qinling orogen
鱼洞子群变质岩年龄及秦岭造山带太古宙基底 - In this paper , the authors used such geophysical exploration methods as the high - precision geomagnetic method , the resistivity profiling method and the induced polarization method to synthetically study the exhausted areas of the archean sedimentary metamorphic iron mines in eastern hebei , built an effective geophysical exploration combination model for the exhausted areas , and summarized the serviceability and validity of various geophysical exploration methods in the exploration of exhausted areas under different geological settings
摘要应用高精度磁法、电阻率剖面法、激发化法等常规地球物理勘查方法对冀东地区太古宙沉积变质铁矿采空区进行综合研究，建立冀东铁矿采空区有效的地球物理勘查组合模型，总结不同地质环境条件下各种地球物理勘查方法在冀东铁矿采空区勘探中的适用性和有效性。 - In the light of tectonic evolution stage and metallogenesis , these metallogenic system ( assemblage ) could be classified as follows : ( 1 ) the pre - divergent metallogenic system in the southwest margin of north china paleocontinent in the archean - meso proterozoic : dongdashan iron , jinchuan nickel - copper . ( 2 ) the divergent metallogenic system in the northern margin of the qaidam paleoplate in the middle - late proterozoic : huashugou - liugouxia iron . ( 3 ) the metallogenic system in the active margin in the early paleozoic : the metallogenic assemblage in the island arc - rift in the early stage ( baiyinchang - qingshuigou copper - polymetallic ) ; the metallogenic assemblage in island arc in the middle - late stage ( honggou - jiaolongzhang copper - polymetallic ) ; the back - arc extensional basin ( zhuzhuiyaba - jiugequan - shijuli copper ) ; the metallogenic assemblage in connection with subduction and magmatic - hydatogenesis ( taergou - xiaoliugou wolfram ; huashugou - liugouxia copper ; dadonggou - diaodaban lead - zinc ) ; the metallogenic assemblage is related to the oceanic crustal shards ( dadaoerji chromite ; yushigou chromite ) . ( 4 ) the metallogenic system has something to do with collision - type orogeny : the metallogenic assemblage in foreland basin ( tianlu copper ) ; the metallogenic assemblage with the intracontinental orogeny and ductile shear ( hanshan - yingzhuishan gold )
根据构造发展阶段和成矿作用特点，确定本区成矿系统及组合如下： ( 1 )华北板块西南边缘太古宙中元古代裂解期前成矿系统：东大山铁成矿组合，金川镍铜成矿组合； ( 2 )柴达木板块北缘中、新元古代裂解成矿系统：桦树沟柳沟峡铁成矿组合； ( 3 )加里东期活动大陆边缘成矿系统：早期岛弧裂谷成矿组合(白银厂清水沟铜及多金属成矿组合) ，中、晚期岛弧成矿组合(红沟蛟龙掌铜及多金属成矿组合) ，弧后扩张盆地成矿组合(猪咀哑巴九个泉石居里铜及多金属成矿组合) ，与俯冲作用有关的岩浆热液成矿组合(塔尔沟小柳沟钨成矿组合，桦树沟柳沟峡铜成矿组合，大东沟吊大坂铅锌成矿组合) ，洋壳残片成矿组合(大道尔吉铬成矿组合，玉石沟铬成矿组合) ； ( 4 )碰撞造山成矿系统：前陆盆地成矿组合(天鹿铜成矿组合) ，陆内造山韧性剪切成矿组合(寒山鹰咀山金成矿组合) 。